viết lại câu với mệnh để if
1.  never get very lonely because I have lots of good friends. →
2 We didn't go on holiday because we didn't have enough time. 
3 We got lost because we didn't have enough time.4. The match can be cancelled because it rains heavily.
5. He lost all his money because he wasn't careful.
6. Because Simon doesn't live near his mother, he can't visit her often.
7. His parents were very disappointed because he failed his final examin